Automatic-dumping transport system.



w. ROSS & w. F. 1. COSSER. AUTOMATIC DUMPING TRANSPORT SYSTEM.

APPLlCATl0N FlLED JUNE 4.1917. 1,266,630. Patented May21,1918. 2 SHEETS-SHEET 1.

6mm a... lla. is

JWVEN T1755- \MR k.

.fl 25:: E

W. ROSS & W. F. I. COSSER. AUTOMATIC DUMPING TRANSPORT SYSTEM.

APPLICATION FILED JUNE 4.19!)- Patented May 21, 1918.

2 SHEETS-SHEET 2.

undu- ZNVEIAI/"TURE. W ma. U15 Cowl/1,.

AZ'TY.

" ATIQT @FFTQE.

WILLIAM BOSS AND WALTER F. J. COSSEB, 07: SOUTH PORC'UPINE, ONTARIO, CANADA.

AUTOMATIC-DUMPING TRANSPORT SYSTEM.

To all'whom it may concern:

Be it known that we, WILLIAM Ross and WALTER F. J. CossER, of South Porcupine, 1n the district of Algoma, Province of Ontario, Canada, have invented certain new and useful Improvements in Automatic- Dumping Transport Systems, of which the following is a specification.

This invention relates to transport systems in which dump trucks provided with outlet doors run on suitable rails from the point of loading to the point of dumping, and our object is to devise a construction of dump truck and controlling and operating mechanism for its doors which will be entirely automatic, by means of which the pressure of the doors on their retaining mechanism is relieved before the doors are released, which provides freest possible exit for the material being dumped, in which no damage can occur to the mechanism if the door closing mechanism comes into operation when any material remains sticking in a door opening and in which the doors are returned to the closed position before they are engaged by the retaining mechanism.

We attain these objects and others which will hereinafter appear by means of the construction hereinafter more specifically described and illustrated in the accompanying drawings in which Figure 1 is an end elevation, partly in section, of a dump car and dumping mechanism;

Fig. 2 a side elevation partly broken away of one of the dump cars;

Fig. 3 a plan view of the same partly broken away; and

Figs. 4 to 7 diagrammatic views illustrating-the operation of the apparatus.

In the drawings like numerals of reference indicate corresponding parts in the different figures.

1 is a dump car adapted to dump to each side. 2 are doors hinged one at each side by their upper edges so that they swing outwardly. These doors are normally held in closed position by means of latches 3 which are pivoted at 4 on the frame of the car. These latches swing downwardly to release the doors. Each latch is normally held in position to lock the corresponding door by means of a link 5 pivotally connected to the latch intermediate its ends and at its other end pivotally connected to Specification of Letters Patent.

Application fi1ed June 4, 1917.

Patented May 21, 1918.

Serial No. 172,693.

an arm 6 secured to a shaft 7 journaled longitudinally of the car. As preferably two latches are provided for each door, four arms 6 are provided.

A stop 8 is provided preferably for each arm and link at one side of the car to limit the downward movement of the same. When an arm and link at the right hand side are in the position shown in Fig. 1, the pivot between the arm and link lies just below an imaginary line joining the center of the pivot between the links and latch and the center of the shaft. An ab solute lock is thus provided for the latch and the latter cannot be released except by an upward rocking movement of the arms shown at the right hand side in Fig. 1 and a consequent drawing down of the arms at the other side. The position of the pivots at the left hand side is the reverse of that, at the right hand side, so that the opening pressure on the latches at the left hand side tends to act with any pressure on the latches at the right hand side to maintain the security of the lock.

11 lever 9 is secured to the shaft 7 and carries a counterweight 10 which tends to maintain the parts in the normal locked position. Connected with the shaft 7 is a lever 11. The connection is such that the lever when swung to the right in Fig. 1 will actuate the shaft, while the lever is free to move in the reverse direction for a purpose which will hereafter appear. Any suitable connection may be used for this purpose, but we show, however, the bearing of the lever as slotted for the passage .of a pin 12 passing into the shaft 7 The lever 11 normally stands at about an angle of 50 to the vertical as shown.

At the dumping position between the rails of the track 13. are provided tripper bars 14. These are flared outwardly at each end, the ends being connected by substantially straight portions parallel with the rails. The tripper bars are preferably double to provide for the tripping of cars which may have become turned end for end so that the tripping lever is pointing in the opposite direction. By engagement of the tripping lever with one of the tripper bars, the latches are released and held in the released position during the dumping of the load. Preferably the end of the lever 11 is provided with an anti-friction roller 15 shown.

- of pressure.

As it is desired to relieve the latches of the pressure of the load when they are to be released, we provide the following means for efl'ecting this purpose: Secured to each door is a rail 16 formed as a laterally extending double inclined plane. At the dumping point we provide means for applying a yielding pressure to these rails to hold the doors against the weight of the load until the latches are released. Preferably we employ a bell crank lever 17 The arm adjacent the cars carries an anti-friction roller 18 adapted to be engaged by the rail 16. The other end of the bell crank lever has a weight 19 hung therefrom.

The movement of the rollers 18 toward the car is limited by the stops 20, which are positioned to be engaged by the arm 17.

The operation of the device is as follows: As a car is drawn or propelled toward the dumping point, the door rails 16 engage the rollers 18 and the latches 3 are thus relieved Second, the roller 15 engages one of the tripper bars 14: and the latches are opened. Third, the door rails release themselves from the rollers 18 and the doors 2 hang freely on their hinges while the load is dumped. Fourth, the car is then either moved on or backed toward its starting point and the door rails 16 again engage the rollers 18 and the doors are closed. Fifth, the rollers 15 are released from the tripper bar and the latches are closed. Sixth, the door rails 16 disengage from the rollers 18 and the latches take up the function of holding the doors closed. It will be noted that the latches are relieved of their load at the time they are opened so that there is no scraping or wearing of the doors or the latches.

It will also be noted that the natural hanging position of the doors leaves a wide aperture for the outlet of material and that large pieces may readily force the, doors still farther open in their exit from the car.

It will also be noted that the doors cannot return and trap the'tail part of the emptying material and that if any material sticks in the door opening and the car proceeds out of the dump, the anti-friction rollers 18 will be pressed outwardly, lifting the weights 19 so that no damage to the apparatus results.

It will be understood that the apparatus can be arranged for one or more cars entering the dump and returning, and for one or more cars to enter the dump and proceed onward. Cars may also enter the dump from either direction and the unlatching apparatus may operate in either a clockwise or counter clockwise direction. 1

Owing to the connection of the lever 11 herein-before described, it may be swung up without affecting the position of the remainder of the apparatus, so that where there are a number of dumps on one track the lever can be lifted up and the carthus proceed through any number of such dumps without unloading, the lever being subsequently dropped into position before reach ing the desired dumping point.

What we claim as our invention is 1. A dump car provided with a door hinged at the top and tending normally to hang open; releasable retaining means for said door in combination with a track on which said car runs; and means located ad'- jacent the track at the dumping position adapted to be engaged by the said door when closed to hold the door against outward pressure.

2. A dump car provided with a door hinged at the top and tending normally to hang open releasable retaining means for said door in combination with a track on which said car runs; and means located adjacent the track at the dumping position adapted to be engaged by the said door when closed to hold the door against outward pressure while release takes place and to return an open door to the closed position.

3. A dump car provided with a. door hinged at the top and tending normally to hang open; releasable retaining means for sald door in combinatlon with a track on which said car runs; and yielding means located adjacent the track at-the dumping position adapted to be engaged by the said door when closed to hold the door against outward pressure. i

4. A dump car provided with a door hinged at the top and tending normally to hang open; releasable retaining means for said door in combination with a track on which said car runs; and yielding means A located adjacent the track at the dumping position adapted to be engaged by the said door when closed to hold the door against .outward pressure while release takes place and to return an open door :to the closed position.

5. A dump car providedwithadoorhinged at the top and tending normally to hang open; releasable retaining means for the said door in combination with a trackon which said car runs; means located adjacent the track at the dumping position adapted to be engaged by the said door whenclosed to hold the door against outwardpressu-re; and means located adjacent the track adapted to release the retaining means after the door has been engaged as aforesaid.

-6. A dump car provided with a hinged door; a rail on said door formed as a laterally extended double inclined plane; and releasable retaining means for said door in combination with a track on which said car runs; and yielding means adjacent the track adapted to 'be engaged by said rail to hold the door against outward pressure when closed and to move it toward or to allow it to move from its closed position,

bination with a track on which said car runs;

a bell crank lever; a wheel j ournaled on one arm of the bell crank lever with which the rail is adapted to engage; and a weight on the other arm of the bell crank lever.

8. A dump car provided with a hinged door; a rail on said door formed as a laterally extended double inclined plane; releasable retaining means for said door in combination with a track on which said car runs; a bell crank lever; a wheel journaled on one arm of the bell crank lever with which the rail is adapted to engage; a weight on the other arm of the bell crank lever; and a stop limiting the movement of the wheel toward the car.

9. A dump car provided with a door at one side hinged at its upper edge; a pivoted latch adapted to engage the lower edge of the door and swinging in a vertical plane transversely of the car; a shaft pivoted beneath the car; an arm connected thereto; a'

link pivotally connected to said arm and to the latch between its pivot and its end astop limiting the downward movement of the arm and link at a point where the pivot between the arm and link lies just below an imagi nary line joining the center of the pivot between the link and the latch and the center of the shaft; and an arm adapted to rock the shaft, an anti-friction roller journaled on the shaft in combination with a track on which the car runs; and means adjacent the track with which said roller may engage to rock the arm and release the latch.

10. A dump ear provided with a door at one side hinged at its upper edge; a pivoted latch adapted to engage the lower edge of the door and swinging in a vertical plane transversely of the car; a shaft pivoted beneath the car; an arm connected thereto; a link pivotally connected to said arm and to the latch between its pivot and its end astop limiting the downward movement of the arm and link at a point where the pivot between the arm and link lies just below an imaginary line joining the center of the pivot between the link and the latch and the center of the shaft; and an arm adapted to rock the shaft; and anti-friction roller journaled on V the shaft in combination with a track on which the car runs; and means adjacent the track with which said roller may engage to rock the arm and release the latch, said arm being adapted to be swung back clear of said engaging means without moving said shaft. Signed at South Porcupine this lath day of April, 1917.

WILLIAM ROSS.

WALTER F. J. COSSER.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. 0. 

